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Exfoliation of MoS2 Catalysts: Structural and Catalytic Changes

Published online by Cambridge University Press:  15 February 2011

M. Del Valle ,
M. Avalos-Borja ,
J. Cruz  and
S. Fuentes
M. Del Valle
Affiliation:
Centro de Investigación Cientifica y de Educación Superior de Ensenada, Ensenada, B. C., Mexico, and UABC, Department of Chemistry, Tijuana, B. C., México
M. Avalos-Borja
Affiliation:
Instituto de Fisica-UNAM, Apdo. Postal 2681, Ensenada, B. C., 22800, México
J. Cruz
Affiliation:
UABC, Department of Chemistry, Tijuana, B. C., México
S. Fuentes
Affiliation:
Instituto de Fisica-UNAM, Apdo. Postal 2681, Ensenada, B. C., 22800, México
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Abstract

A study of the microstructural differences between exfoliated and non-exfoliated MoS2-based materials is presented, relating them to differences in their catalytic activity. Both commercial (crystalline) MoS2 and molybdenum sulfide catalysts prepared by thiosalt decomposition are subjected to chemical exfoliation reported to separate MoS2 monolayers from the original structure. Electron microscopy results show that the chemical treatment yields non-typical MoS2 nanostructures. Average surface area is also modified by exfoliation. The thiophene HDS activity of commercial MoS2 increases after exfoliation, while it decreases after exfoliation in the case of MoS2 catalysts.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 351: Symposium V – Molecularly Designed Ultrafine/Nanostructured Materials , 1994 , 287
Copyright
Copyright © Materials Research Society 1994

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References

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